Alright, let's work through 87148278 times 50040408 step by step
87148278 × 50040408 = 50040408 × (87148278)
+ 50040408 × 8 what gives us 400323264
+ 50040408 × 70 what gives us 3502828560
+ 50040408 × 200 giving us 10008081600
+ 50040408 × 8000 that is equal 400323264000
+ 50040408 × 40000 resulting in 2001616320000
+ 50040408 × 100000 producing 5004040800000
+ 50040408 × 7000000 giving us 350282856000000
+ 50040408 × 80000000 yielding 4003232640000000

= 4360935387617424
